Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, null given in /var/www/classysmall/www/program/promotion.attend.php:31 Stack trace: #0 /var/www/classysmall/www/index.php(13): include_once() #1 {main} thrown in /var/www/classysmall/www/program/promotion.attend.php on line 31